Flue-plug.



s. ADAMS.

FLUE PLUG. APPLIoA'rIoN FILED 11111. 15; 1910.

987,099. Patented 11111.21, 1911.

01E/messes: as 248mm.; fmvemzfolp SILAS ADAMS, OF CLEVELAND, OHIO.

FLUE-PLUG'.

Specification of Letters Patent.

Patented Mar. 21, 1911.

Application filed April 15, 1910. Serial No. 555,637.

of the United States, residing at Cleveland,v

in the county of Cuyahoga and State of Ohio, have invented certain newand useful Improvements in Flue-Plugs, of which the following is aspecification.

This invention relates to Hue plugs or devices for preventing leakingbetween boiler Hues and plates, and it has for its object to provideimproved means for packing the Hues for preventing leakage at the endsof the Hues where they are fastened to the boiler plate.

The device can be used on new Hues, or for repair purposes. It embodiesmeans for clamping a washer and packing ring over the joint at the endof the Hue, on the outer side thereof, to prevent the leakage referredto.

In the accompanying drawings-Figure 1 is a central longitudinal sectionof part of a Hue and boiler plate provided with the device. Fig. 2 is aplan of a nut which clamps the parts in place. Fig. 3 is a plan of awasher. Fig. l is an end view of the tubular plug. Fig. 5 is an end viewof a socket member which is secured within the Hue.

Referring specifically to the drawings, 6 indicates the boiler plate and7 the Hue fastened thereto by the beaded end 15, with the usual copperring 16. The Hue has an inner seat or shoulder 18, as is usual with Huesnow in standard use, especially on locomotives.

A tubular plug 9, having a tapered inner end 9a, screws into the end ofa sleeve or tubular socket member 8, located within the end of the Hue.This sleeve has two opposite springs 12 therein, secured near its innerend by rivets 13, and these springs have at their outer ends outwardlyextending fingers 12a which may project through holes 17 in the sleeve8, in position to engage the shoulder 18 when the parts are in place inthe Hue. The plug 9 has a shoulder 9b which stops against the end of thesleeve 8 to prevent excessive inward movement.

On the outer end of the plug 9, beyond the boiler plate, is a washer 11having on its inner face an annular rib 11, and this washer is mountedto slide on the plug. A nut 10 is screwed on the threaded outer end ofthe plug, against the washer 11, and an asbestos or other packing ring14: is provided between the washer and the end of the Hue and the boilerplate.

In use, the plug 9 is partly screwed into the sleeve 8 before they areinserted in the Hue. After being inserted, the plug is screwed in untilthe tapered end 9a forces the fingers 12a outwardly to engage theshoulder 18 in the Hue. Then the nut 10 is screwed down to clamp thewasher and packing in place, the pressure drawing the Hngers or detents12 tightly against the shoulder 18 and holding all parts in position.y Atight joint is formed between the bead 15 and the packing, as well asbetween the boiler plate 6 and the packing, this result being assistedby the rib 11". The plug may be removed by taking 0H the nut 10 andunscrewing the part 9, and the spring Hngers will withdraw fromengagement with the shoulder of the Hue and permit the sleeve and otherparts to be pulled out.

It will be noticed that special construction of the Hue or boiler plateis unnecessary, and hence the device may be applied to eX- isting Hues,provided they have the shoulder 18 or its equivalent, or other meansprovided to engage the detents to the Hue.

IVhat- I claim as new is 1. A device for the purpose stated, comprisinga socket member adapted to fit within a Hue, a tubular plug screwed intosaid member, means carried by said member and actuated by said plug whenscrewed therein to hold the member in position in the Hue, v

and packing devices mounted on the plug.

2. A device for the purpose stated, comprising a socket member adaptedto Ht within a Hue, yielding engaging devices mounted in said member andadapted to engage the inner surface of the Hue to hold said member inposition in the Hue, a tubular plug screwed into said member and intocontact with said devices to force the same into engagement with theHue, and a packing mounted on the plug and covering the joint around theHue.

3. A device for the purpose stated, comprising a socket member adaptedto Ht within a Hue, said member having lateral openings, spring detentsattached within the said member and arranged to be advanced in saidopenings to engage the inner surface of the plug, a tubular plug coupledwith the socket member and movable therein to advance said detents tosuch engagement,

and packing devices mounted on `the plug, against the end of the flue.

4. A device for the purpose stated, comprising a tubular. sleeve adaptedto fit with- .inV the end of a flue, spring detents carried bysaidsleeve and movable in the wall thereof t0 engagement with the flue toholdtlie sleeve therein, a tubular plug serewedinto said ysleeve andhaving a beveled inner end arranged to bear against said detents andforce the same outwardly to engagement with the flue, and packingdevices mounted on the plug, outside of the end of the flue.

5.*The combination with a flue plate and a flue having an internalshoulder, of. a

Y sleevev tting vwithin ythe end-of the flue,

into the sleeve and bearing at'h its inner end against said detents toadvancev the saine for such engagement, and jacking devices mounted 0nthe outer end o1: the plug, over the joint of the flue and Hue plate.

(G. rThe. combination of a flue plate and flue', a tubular threadedplug, means to hold the inner end thereof in the flue, 'a packing ringhaving an annular rib located on the lplug and covering the jointbetween the flue and plate, the rib being presented toward the plate,and 1a mit on the plug, to press the ring .toward the plate] Intestimony whereof, fI aix my signa- .ture in the presence of twowitnesses.;`

Y SILAS ADAMS.

Witnesses;

WM. STRoUr, MONROE E. MILLER.

opieslof this patent may be obtained for ve eents each, Vby addressingthe Commissioner of Patents,

' Y Washington, D. C.

